Table 2.

Coefficients of determination (R2) for the case-mix based models to predict the health cost per patient

		Demographic variables only	ACG-PM	CRG	DCG-HCC
Out of the box	Variables:
	A&S + dx + rx + cost percentiles (age < 65)		0,167
	A&S + dx + rx + cost percentiles (age 65+)		0,164
	A&S + dx			0,135
	A&S + dx + cost				0,181
	A&S + dx + rx + cost				0,208
Recalibration	Variables
	Age and Sex (A&S):	0,071
	A&S + Only Dx		0,182	0,181	0,213
	A&S + Only Rx		0,165	-	0,178
	A&S + Dx + Rx		0,211	-	0,236
	A&S + Dx + Rx + cost percentile		0,231	0.218*	0,246
	A&S + Dx + Rx + cost		0,260	0.254*	0,269
	A&S + Dx + Rx + cost + DI		0,260	0.254*	0,269

*The CRG models do not include prescriptions.

Age groups: 14–17; 18–34; 35–44; 45–54; 55–64; 65–69; 70–74; 75–79; 80–84; 85 + .

Cost groups in percentiles: 0–1; 2–10; 11–25; 26–50; 51–75; 76–90; 91–93; 94–95; 96–97; 98 + .

Dx diagnoses, Rx prescriptions, DI Deprivation index.